In the diagram below, particles of the substance are moving from the liquid phase to the gas phase at the same rate as they move from the gas phase to the liquid phase.
The gas and liquid are at
O equilibrium
O a high vapor pressure.
O a low vapor pressure.
O zero vapor pressure.

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?

Which of the following is in the lanthanide family? a) uranium b) promethium c) silver d) gold